Merge pull request #735 from Iterable/MOB-8451

MOB-8451

Author: Ayyanchira

iterableapi/src/main/java/com/iterable/iterableapi/IterableInAppManager.java

@@ -281,8 +281,10 @@ public synchronized void removeMessage(@NonNull IterableInAppMessage message, @N
      */
     public synchronized void removeMessage(@NonNull IterableInAppMessage message, @Nullable IterableInAppDeleteActionType source, @Nullable IterableInAppLocation clickLocation, @Nullable IterableHelper.SuccessHandler successHandler, @Nullable IterableHelper.FailureHandler failureHandler) {
         IterableLogger.printInfo();
-        message.setConsumed(true);
-        api.inAppConsume(message, source, clickLocation, successHandler, failureHandler);
+        if (message != null) {
+            message.setConsumed(true);
+            api.inAppConsume(message, source, clickLocation, successHandler, failureHandler);
+        }
         notifyOnChange();
     }